Asus GX900 mouse
The Asus GX900 mouse closely resembles the Ozone Radon 3K and probably has similar origins. It has a 4000 DPI Twin-eye laser sensor from Philips. A switch at the top lets you choose between two DPI settings (1200 and 4000 DPI) indicated by LEDs on the top. There is a standard profile and it's possible to create three custom profiles including macros. This does require the installation of software. Each profile gets its own colour in the button you use to switch profiles. There are two browsing buttons.
The indentations on the sides make it easy to lift the mouse, but it makes it unsuitable for lefties. In the bottom there is a compartment where you can place five 4.5-gram weights, for a maximum of 141 grams. The standard weight is 118 grams. The USB cable can be run from the side or in an angle from underneath the mouse, to create the optimal working environment.
The Philips Twin-eye laser sensor is known for showing some deviations. Our Photoshop test proved that the GX900 not accurate enough for creating a straight line. The cursor exhibits some jittering when you lift it up a little, and we were also not able to make an accurate measurement for the lift-off. When you pick up the mouse and set it back down again in the same location, the cursor jumps to the bottom-right corner of the screen.
It's too bad that ASUS did not instead include the GX950 mouse, because it has a better sensor.